<template>

        <el-container class="home-container">
            <!-- 头部区域 -->
            <el-header>
                <div>
                    <!-- <img src="../assets/logo.png" alt=""> -->
                    <span>电商后台管理系统</span>
                </div>
                <el-button type='info' @click="logOut">退出</el-button>
            </el-header>
            <!-- 页面主题区域 -->
            <el-container>
                <!-- 侧边栏 -->
                <el-aside :width="isTrue?'64px':'200px'">
                    <!-- 侧边栏菜单区域 -->
                    <div class="toggle-button" @click="toggleCollapse">|||</div>
                    <el-menu
                        background-color="#545c64"
                        text-color="#fff"
                        active-text-color="#409EFF"
                        unique-opened
                        :collapse="isTrue"
                        :collapse-transition="false"
                        router
                        :default-active='activePath'>
                        <!-- 一级菜单 -->
                        <el-submenu :index="item.id+''" v-for="item in menulist" :key='item.id'>
                            <!-- 一级菜单的模板区域 -->
                            <template slot="title">
                                <!-- 图标 -->
                            <i :class="iconsObj[item.id]"></i>
                            <!-- 文本 -->
                            <span>{{item.authName}}</span>
                            </template>
                            <!-- 二级菜单 -->
                            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" 
                            :key='subItem.id' @click="saveNavState('/'+subItem.path)">
                                <i class="el-icon-menu"></i>
                                <span>{{subItem.authName}}</span>
                            </el-menu-item>
                        </el-submenu>
                    </el-menu>
                </el-aside>
                <!-- 主区域 -->
                <el-main>
                    <router-view></router-view>
                </el-main>
            </el-container>
        </el-container>
</template>

<script>
    export default {
        data(){
            return{

                // 左侧菜单数据
                menulist:[],
                iconsObj:{
                    '125':'iconfont icon-users',
                    '103':'iconfont icon-tijikongjian',
                    '101':'iconfont icon-shangpin',
                    '102':'iconfont icon-danju',
                    '145':'iconfont icon-baobiao'
                },
                isTrue:false,
                // 被激活的链接地址
                activePath:''
            }
        },
        created(){
            this.getMenuList(),
            this.activePath=window.sessionStorage.getItem('activePath')
        },
        methods:{
            logOut(){
                window.sessionStorage.clear();
                this.$router.push("/login")
            },
            // 获取所有的菜单请求
            async getMenuList(){
               const{data:res}=await this.$http.get('menus')
               console.log(res.data); 
            if(res.meta.status!==200) return this.$message.error(res.meta.msg);
            this.menulist=res.data
            },
            // 点击按钮切换菜单的折叠与展开
            toggleCollapse(){
                this.isTrue=!this.isTrue
            },
            // 保存连接的激活状态
            saveNavState(activePath){
                window.sessionStorage.setItem('activePath',activePath)
                this.activePath=activePath
                },
            }
        }
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left:100 ;
    align-items: center;
    color:aliceblue;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
}
.el-aside{
    background-color:  #373d41;
    .el-menu{
        border-right:none ;
    }
}
.el-main{
    background-color: rgb(228, 236, 236);
}
.iconfont{
    margin-right:10px
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}

</style>